Automatic exposure-spacing machine for roll-films for cameras.



E. G. E RVIN & F. C. SMITH. AUTOMATIC EXPOSURE SPACING MACHINE FOR ROLL FILMS FOR CAMERAS.-

APPLICATION HLED AUG. NM 19] 6.

Patented July 3, 1917.

dbweniom,

UNITED STATES PATENT OFFICE.

EDWIN GAMBLE EBVIN A.ND FLOYD CRAWFORD SMITH, 0F BTILWELL, OKLAHOMA.

AUTOMATIC EXPOSUBE-SPACING MACHINE FOB ROLL-FILMS FOB CAMERAS.

Our present invention relates generally to cameras, and more particularly to film winding mechanism utilized 111 connection therewith to automatically wind the film in bein figures,

parts of advancing unexposed sections for exposure, manually controlled to operate after each exposure for this purpose, our object being to provide a comparatively simple inexpensive arrangement which may be readily utilized in connection with cameras now in use, or which maybe constructed in connection with a camera to form a part thereof.

Other objects relating for the most part to the details of construction of our improved mechanism, will more clearly appear from the following description thereof, reference made to the accompanying drawings in w ich: I t

Figure 1 is a rear elevation of a camera, a portion of the casing of which. is broken away to show our improved mechanism,

which also are in section, and

Fig. 2 is a longitudinal section through the camera in the plane of the mechanism proposed by our invention. Y

Referring now to these figures; our improvements are preferably mounted. in connection with a camera, as seen in the two between inner and 'outer parallel plates land 2, which the usual casing of the camera is referably extended to cover, the shaft of t e feed "r'o1 l and takeuproll of the film,indicated at 13 and 45' respectively" being preferably extended through the plates 1 and 2, and, the former being preferably provided with a tension spring 14 coiled therearound, as seen in Fig. 1 in order to tension the movements of the film and hold the same substantially taut at all times.

Thefilni winding mechanism as proposed by our invention includes, amon other parts, 'a gear wheel 3 havinga ratc et con nection upon a shaft 44 on which said gear is revoluble, this gear being actuated by a ring 5 within aspring housing 4, the

latter of which is attached to the outer plate Specification of Letters I'atent.

Application flied August 10, mic. Beria1No.-114,804.

Patented July 3, 1917.

2, as seen in Fig. 1, this spring being se cured at its inner end to the shaft 44 and the latter provided with an external key 6 b means of which it may berotated to wind t e sprin 5 from time to time when necessary or esired, gear 3 being connected to another ear 17 mounted upon the same shaft 44 y means of the arms 8 in Fig. 1.

The gear 17 drives a gear '16 mounted upon a shaft 36, through an idler 18, and the gear 3 before mentioned drives a gear 23 mounted upon the same shaft 36, gear 23 be1ng secured to a gear 24, and gear 16 being secured to a controlling disk 15 hav- 11 1 a series of eripheral notches at one 51 e, and -a singe peri heral notch at its opposite side isolated mm the series of 1 notches, the notches of the series being spaced apart, as seen by referenceto Fi 2, for a purpose'to be presently describe Mounted upon the ta e-up shaft 45 is a the gear 24, an provided with a pawl 43 in engagement with a ratchet wheel 26 secured upon the said shaft 45' so as to thus provide for manual rotation of the take-up shaft, as well as its automatic rotation from a the spring actuated gear 3 through the gears 23, 22:, and and the ratchet. connection lit diametrically opposite side, as compared with the gear 23, the spring actuated gear 3 is in mesh with a gear 19 u on a shaft 34, having a ear 41 in mesh wit a gear 42 upon the she; t 33, gear 42 being secured to a gear 20, thelatter of which is in mesh with the gear of a shaft 35 on which is secured a sleeve having a dgear25 in connection with secured to the speed of the gear train and check excessive ,momentum, the governor levers 31 being taken in or let out forpurposes of adjust ment, by means of spring wires 38 controlled by nuts mounted Iupo'n thethreaded stem connected to the shaft 35.

Intermediately pivoted at her plate 1 is, a manually'shiftable locking arm 9, one angular end of which is heldin engagement with theperiphery .ofthe controlling diSK 15 by means of a spring 10, and the opposite end of which is bent to'extend 30 upon a; in

is attached at one end to the eont-rollin arm d|sk In as shown in lug.

Si and iQ'TiiUtitlt-t'l'at: its opposite end with a linger piece or push button ill, this stein heing controlled by a. spring ll so as to normally hold the button ilrouler position and the lUChlll" arm 9 in the active position shown in lig. 2.

In order. furthermore. to lllt'h the disk 22 and obviate itsaeeidental release when the liaek of the eanlera is removed for loading or witlalrawing a lilm, a pivoted member 3'2 is provided for engagement with said lockin disk, and is movahle under aetuation of a spring -16, to engage the same, this memher it! being engaged by the haek of the eamera when the same is elosed. as seen in Fig. 2, in order to hold the said memher in inoperative. position.

Thus with the spring 5 womul and the lilm adjusted upon the feed and lakeup rolls, -and movedto a position where the-usual in- .dieating arrow appears through the rear sight. (Fpening ol the rover ol the mineral. and with the eontrolling end of th arm 9 in engagemeiit with the isolated noteh of the L, inward pressure upon the push button or 'Iinger 'pieee 29' serves to'roek the arm 9 upon its lulerum 30 to release the angular end thereof l'rom the nolehed disk 15 and sinulltaneouslv move its opposite upstanding extremity out of en gagement with the projections of the looking disk 21!. lnmna'liatelv upon sueh movement the gear train will start in operation h v virtue of the spring 59 so that. r tation will he eonununiealed to the take 1'') shaft and movement of the. lilln started. release ol the push huttoir rmitling t he, spring i to draw the tll'tgfifi tlttrafl the arm 9 drop into the lirst ol' the eries of slots when the gear train. has rotated the disk lfrnntil i lots is opposite the instant the an- .siiid angular e.\l

gula r extrenutv ol' the arm Intro iutoutlu-l -...p ripheryashthe sa-ld-mntrol-l1i-ig-alislrmmd- I e winding ol thelilui to eolnplete the roll, ler the last exposure halll \'l| m de. alul onee morepth'us"arm for the purpose described.

that the spacing between the several slots of the series of slots, takes care of the winding of the lilm to advance the same hetween exposures.

t is further ohvious that our invention provides for the ahove means simple and emiumratively inei pensive connections, which will be strong,' and durable in use, which may he utilized eithe' as anattachmeat in connection with cau'ieras already in use, or as a part of a camera in the first .instance. and that ourimprovements will heettective and 'tllitlklil l'or .lhe several purposes stated. i

We claim:

1. in afilm winding apparatus, the enmbination with the shaft ol the lake-up roll, of a spring aetuatedgear train having a ratchet Connection with said shaft. a controlling disk rotated h v said gear train and having a series of spaced apart notehes extending around a portion of its peripher and'having asinglt notch at another portion thereof isolated from the series of notches, a locking disk also rotated by said gear train, having its peri 'ihery slotted to provide aseries of projections, an intermediately pivoted controlling arm havin ,..-t'ine endprovided with an upstanding x rei'nity normally engaging one. of the t'ijeetions of said looking disk, said fifli ii having an angularextremity at it. oppositeend, engageahlewith the peripheryot'ptadsaid controlling disk,-

spring normally holding said arm in its ongaged operative position, and a stem conn eeted to the arm and provided with an externally disposed push button, whereby the arm may he shifted manually against.

the tension of. its spring.

2. In a film whaling apparatus the combination with'the. shaft of the take-up ,roll.- of a spring actuated gear train having a ratehel; connection with said shalt, a. "con trolling disk rotated'lrv said gear-traiIt-aml having a series of spaced peri iheral notehes, a hxzking disk also rotated hv said gear train, an intermedlatelv pivoted controlling; arm having one out ndY-iiiall: oga ging si'ild loeking disk and having an angular. extremity at its opposite end engageable. with the movable int-o thenotehes thereof, a spring normally ttfilltl't'llllng said arm, and a manually eontrolled push hut-ton connected to said It. in a lilm winding apparatus, the co nhination with the shaft of the take-up roll, ot-a spring equated gear train having a ratehet ronneetion with saidsltaft, locking means lor thev gear train lll(llltllllg a titan all v shil'lahlei locking arm. and a eo'ntroh ling memher eonsisting of a notched disk normally engaged lrrv a portion of said lock HIIL; tll'lll.

4. In a filin winding apparatus, the oomt bination with the she of the take-up roll, of a spring actuated gear train having a ratchet connection wit "said shaft, a. governor mechanism connected to and controlling movement of the gear train in operation, locking means for the gear train normally holding the same inactive, and mcluding a locking disk, and a manually shift able locking arm normally in engagement at one end with said locking disk, and a controlling member consisting of a notched disk normally engaged by the opposite end'of said arm. 7

5. Ina film windin apparatus, the combination with the sha t of the takea'lp roll, of a spring actuated gear train havlnga ratchet connection with said shaft, and lock ing means for the gear train including a locking disk and a controlling disk rotated by said gear train, a spring controlled lockbination with the she arm'having means simultaneously shiftab e into and out of engagement with said locking and controlling disks, and a spring normally holdin said arm in engaged position, and manuafiy actuated means for shifting said ann to disengaged position.

. In a film winding apparatus, the comt of the take-up roll, of aspring actuated gear train having a ratchet connectionwith said shaft, locking means for the gear train including a looking disk and a controlling disk rotated by said gear train, an intermediately pivoted locking arm having a controlling spring,

and eniageable at one end with said locking dis and at its opposite end with said controlling disk, and manually actuated means connected to said arm for shifting osition.

the latter to released BLE ERVIN.

EDWIN G FLOYD CRAWFORD SMITH.- 

